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- Add access to the function2 gpio register. This probably has to be
- converted into a pimux driver later on. This is needed for some setup
- functions on the Arduino Yun.
- --- a/arch/mips/ath79/common.h
- +++ b/arch/mips/ath79/common.h
- @@ -28,6 +28,7 @@ void ath79_ddr_wb_flush(unsigned int reg
- void ath79_gpio_function_enable(u32 mask);
- void ath79_gpio_function_disable(u32 mask);
- void ath79_gpio_function_setup(u32 set, u32 clear);
- +void ath79_gpio_function2_setup(u32 set, u32 clear);
- void ath79_gpio_output_select(unsigned gpio, u8 val);
- int ath79_gpio_direction_select(unsigned gpio, bool oe);
- void ath79_gpio_init(void);
- --- a/arch/mips/ath79/gpio.c
- +++ b/arch/mips/ath79/gpio.c
- @@ -43,6 +43,31 @@ static void __iomem *ath79_gpio_get_func
- return ath79_gpio_base + reg;
- }
-
- +static void __iomem *ath79_gpio_get_function2_reg(void)
- +{
- + u32 reg = 0;
- +
- + if (soc_is_ar71xx() ||
- + soc_is_ar724x() ||
- + soc_is_ar913x() ||
- + soc_is_ar933x())
- + reg = AR71XX_GPIO_REG_FUNC_2;
- + else
- + BUG();
- +
- + return ath79_gpio_base + reg;
- +}
- +
- +
- +void ath79_gpio_function2_setup(u32 set, u32 clear)
- +{
- + void __iomem *reg = ath79_gpio_get_function2_reg();
- +
- + __raw_writel((__raw_readl(reg) & ~clear) | set, reg);
- + /* flush write */
- + __raw_readl(reg);
- +}
- +
- void ath79_gpio_function_setup(u32 set, u32 clear)
- {
- void __iomem *reg = ath79_gpio_get_function_reg();
- --- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
- +++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
- @@ -847,6 +847,7 @@
- #define AR71XX_GPIO_REG_INT_PENDING 0x20
- #define AR71XX_GPIO_REG_INT_ENABLE 0x24
- #define AR71XX_GPIO_REG_FUNC 0x28
- +#define AR71XX_GPIO_REG_FUNC_2 0x30
-
- #define AR934X_GPIO_REG_OUT_FUNC0 0x2c
- #define AR934X_GPIO_REG_OUT_FUNC1 0x30
- @@ -971,6 +972,8 @@
- #define AR724X_GPIO_FUNC_UART_EN BIT(1)
- #define AR724X_GPIO_FUNC_JTAG_DISABLE BIT(0)
-
- +#define AR933X_GPIO_FUNC2_JUMPSTART_DISABLE BIT(9)
- +
- #define AR913X_GPIO_FUNC_WMAC_LED_EN BIT(22)
- #define AR913X_GPIO_FUNC_EXP_PORT_CS_EN BIT(21)
- #define AR913X_GPIO_FUNC_I2S_REFCLKEN BIT(20)
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